below ground leak testing Articles

Researchers at EPA’s National Risk Management Research Laboratory (NRMRL) in Ada, OK, are developing quality assurance (QA) measures for soil-gas and sub-slab sampling methods that help differentiate contaminant vapors due to vapor intrusion from background sources. Recent research focused on measures to identify leakage of ambient air into conventional vapor probes, which can significantly ...

For many water engineers the day in the office begins with a look at the screen. They can analyse the results of the nightly measurements of their fresh water pipelines in a few minutes and make important decisions for the day. Are there any new leaks in the system? Using the information found, the water engineer can send his workers to precisely those points that the leak detection system has ...

Why was the Amistad dam emptying—and what could be done to solve the problem? In 1996, the Comision Federal de Electricidad (CFE), the national electric company of Mexico responsible for the Mexican half of the Amistad Dam, contacted AGI. The CFE heard about the capabilities of our instruments to look into the ground, and they were ...

Munox SR bioaugmentation remediated petroleum seepage on a Caribbean Island by NRG Save of Toronto. For several years on-going surface seepage from a crude petroleum leak was collected in a pit to prevent further surface flow. Recently, Munox SR was added to the pit and to the ground surface. After 6 days the water in the pit was visibly cleaner. After 12 days ...

The Aquasscan TM Successfully locates leaks at distances over 1KM in Sydney. The Gutermann Aquascan (Trunk Main) correlator provided a series of high performance correlations in trials performed in Sydney, Australia. Sydney Water provided a 1.2 KM of 600mm OD Steel trunk main for a series of tests to be performed to evaluate the performance. The testing was administered by ...

ABSTRACTThe California Regional Water Quality Control Board, Santa Ana Region (RWQCB) required wastewater collection agencies in Orange County to report discharges from “pipe breaks, leaking sewer pipes and joints, and other subsurface discharges of wastewater.” The Orange County Sanitation District (OCSD), in conjunction with a research team from University of California, Irvine (UCI), developed ...

On December 19, 2008, EPA issued a final rule establishing a voluntary Alternative Work Practice (AWP) to detect leaks of volatile organic compounds (VOC) and hazardous air pollutants (HAP) from process equipment (FR Vol. 73, Number 246), thereby providing the regulated community additional flexibility in complying with leak detection and repair (LDAR) requirements. The AWP allows owners or ...

Optimization of an emulsified vegetable oil (EVO) delivery system led to uniform distribution and ongoing biological treatment of a PCE source area last summer at the former Naval Training Center (NTC) in Orlando, FL. Remedial efforts targeted contaminated ground water at a former laundry and dry cleaning facility at NTC's Operable Unit 4 (OU4), where earlier injections of potassium permanganate ...

Many decisions that are made at the design stage of engineering can have a major impact on safety and cost during the operational stages. This is especially true of pipe supports. Corrosion under pipe supports (CUPS) is a growing problem and a particular threat to pipework integrity, as Laza Krstin, Principal Consultant at ABB Consulting, explains. For many operating companies, extending the ...

Introduction An offshore worker ensures a vessel is safe to enter; a plant manager enters a small plant room; a contractor inspects the lining of a sewage pipe. All these personnel face common dangers, despite working in widely different industries. Gas-related injury poses a serious threat in any confined space where the free movement of air is limited. A confined space ...

EPA Region 7 has developed a comprehensive VI program to address the installation and long-term operation and maintenance (O&M) of VI mitigation systems, as well as assessment sampling for future systems, in homes near the Chemical Commodities, Inc. Superfund site (CCI). Region 7's VI Program Implementation Manual, which describes decision processes and procedures as well as roles and ...

One portable Cart Mount System services multiple locations Concerns about dermatology in a machine shop? This sounds more like discussing ballet on the baseball field. Dermatitis is not a general complaint among grinder operators, but finding a solution to the problem was almost as tricky as finding a prima ballerina who can pitch for the majors. The safety director can't just ...

As companies start to distribute their computing to the edge, one of the most critical decisions they need to make is which type of building works best for their application. Edge computing requires solid, secure facilities and networks. Industry experts advise that edge computing equipment should be installed in structures that are built as robust as large data centers with the same concerns for ...

To improve water conservation install a rain sensor, it turns off your irrigation when it rains. Use a weather-based controller. The use of smart controllers can reduce water usage 24% a year on average. Learn about available rebate programs ...

Summary -Fracking is an essential technology to meet growing global demand for oil and gas. -Fracking has become the "F" word, because it is very water-intensive, and has potential negative impacts on the environment. -The future of fracking will be constrained if adequate water is not available and if solutions for decontaminating wastewaters are not found. -Oil sands ...

ABSTRACT: Evidence is mounting, from laboratory and field studies, that oxygen plays a role in the bioremediation of methyl tertiary butyl ether (MTBE). Our experience with a number of commercial applications of peroxygen, in the form of Oxygen Release Compound (ORCâ), correlates the provision of enhanced aerobic conditions with enhanced MTBE biodegradation. Subsequent laboratory and field ...

The minerals industry has faced increasing pressures in recent years in the management of tailings streams. Environmental, economic and other factors have led many minerals producers to explore the technology of making and using “paste.” With the increasing number of installations worldwide, this technology has proved to not only be industry accepted, but economically advantageous. ...

As the sales executive with an R2 & ISO-14001 certified electronics recycling, scrap purchasing, and asset management corporation, I could write all day about why I think Dynamic Recycling should be your e-recycling vendor. I would rather provide you with the appropriate information to conduct your own evaluation/analysis of what to look for in choosing a recycler that is the right fit for ...

Abstract: Releases of petroleum compounds from underground storage tanks (USTs) containing diesel fuel and gasoline are a serious and increasingly prevalent problem in Puerto Rico. Remediation of groundwater impacted by these releases utilizing common methodologies can be quite costly and require long periods of time to implement. Oxygen is often the limiting factor retarding optimal ...

How can a wastewater treatment plant embedded into a neighborhood not use much landmass and be environmentally friendly and user-friendly all at the same time? One system aims to do all of the above. Why should a wastewater treatment plant always have to look like, well, a wastewater treatment plant? A visual trip through project files of Aqueonics Inc., based in Greenville, SC, reveals photos ...

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